Using equalized data for filter selection in HDTV receiver

Details Using equalized data for filter selection in HDTV receiver Using equalized data for filter selection in HDTV receiver

1998-04-24

2000-04-18

Faile, Andrew I.

Television

Receiver circuitry

348 21, 348607, 348609, 348610, 375229, 375230, 375241, H04N 544, H04N 538

Patent

active

060521589

ABSTRACT:
A digital television receiver includes a filter for minimizing NTSC interference with a received signal having a constant symbol rate. An equalizer has two one symbol delays for each tap. A filtered and a non-filtered version of the received signal are applied to a multiplexer at the input of the equalizer, which is operated at twice the symbol rate. The outputs of the multipliers in the equalizer are combined and applied to a demultiplexer. The filtered and non-filtered equalized signals are compared and a selection as to which of the filtered or non-filtered received signals is to be processed is made based upon the comparison.

REFERENCES:
patent: 5546132 (1996-08-01), Kim et al.
patent: 5572249 (1996-11-01), Ghosh
patent: 5602602 (1997-02-01), Hulyalkar
patent: 5731848 (1998-03-01), Patel et al.
patent: 5793417 (1998-08-01), Lee
patent: 5886748 (1999-03-01), Lee

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